WorksheetsELCA- Intro Physics - Spring Final Study Guide
Total questions: 102
Worksheet time: 51mins
Indicate whether the statement is true or false: Amplitude is a distance measure on a wave from one crest to the adjoining crest.
True
False
Indicate whether the statement is true or false: Amplitude is a distance measure on a wave from one crest to the nearest trough.
True
False
Indicate whether the statement is true or false: Amplitude is a distance measure on a wave from one crest to the resting or equilibrium position of the medium.
True
False
Indicate whether the statement is true or false: Wavelength is a distance measure on a wave from one crest to the adjoining crest.
True
False
Indicate whether the statement is true or false: Wavelength is a distance measure on a wave from one trough to the adjoining trough.
True
False
Indicate whether the statement is true or false: Wavelength is a distance measure on a wave from one crest to the adjoining trough.
True
False
Indicate whether the statement is true or false: The peak is the highest or tallest point on a wave.
True
False
Indicate whether the statement is true or false: The trough is the highest or tallest point on a wave.
True
False
Indicate whether the statement is true or false: The trough is the lowest point on a wave.
True
False
Indicate whether the statement is true or false: The peak is the lowest point on a wave.
True
False
Indicate whether the statement is true or false: Seconds per cycle is a common unit used to measure the frequency of a wave.
True
False
Indicate whether the statement is true or false: Cycles per second is a common unit used to measure the frequency of a wave.
True
False
Indicate whether the statement is true or false: Hertz is a common unit used to measure the frequency of a wave.
True
False
Indicate whether the statement is true or false: Seconds per cycle is a common unit used to measure the wavelength of a wave.
True
False
Indicate whether the statement is true or false: Meters is a common unit used to measure the wavelength of a wave.
True
False
Indicate whether the statement is true or false: Centimeters is a common unit used to measure the wavelength of a wave.
True
False
Indicate whether the statement is true or false: Cycles is a common unit used to measure the wavelength of a wave.
True
False
Indicate whether the statement is true or false: Seconds per cycle is a common unit used to measure the speed of a wave.
True
False
Indicate whether the statement is true or false: Seconds per meter is a common unit used to measure the speed of a wave.
True
False
Indicate whether the statement is true or false: Centimeters per second is a common unit used to measure the speed of a wave.
True
False
Meters per second is a common unit used to measure the speed of a wave.
True
False
In a parallel circuit, current in each branch is the same.
True
False
A schematic diagram is a simplified, blocked-out picture of a circuit in which parts of the circuit are represented by symbols.
True
False
In order to prevent overloading in a circuit, fuses are inserted in the circuit.
True
False
A fuse or circuit breaker used in a circuit is usually inserted in parallel.
True
False
Charge will move in a conductor when there is a difference in potential between the ends of the conductor.
True
False
Charge flows from low potential to high potential.
True
False
In solid conductors, positive current is the flow of protons in the conductor.
True
False
The unit of electric current is the ampere.
True
False
A resistor is something placed in a circuit that totally blocks the flow of electrons.
True
False
Ohm's law is a relationship among voltage, current, and charge.
True
False
You should never work with plugged-in electrical appliances while standing in water.
True
False
Most of the electricity we buy through power companies is direct current.
True
False
Electrical outlets in our walls are a source of electrons to run electrical appliances.
True
False
The kilowatt-hour is a unit of power used by power companies.
True
False
The energy a charge possesses by virtue of its location is called electrical potential energy.
True
False
The unit of electric potential is the joule.
True
False
The study of electricity at rest is electrostatics.
True
False
The reason electrons are attracted to protons is that electrons and protons have the same amount of charge.
True
False
All electrons are identical; all have exactly the same mass and charge.
True
False
The total amount of charge in the universe is constant. We have never observed a case of net creation or destruction of charge.
True
False
Coulomb's law says that there are two kinds of charges, positive and negative.
True
False
A material is a good insulator if outer electrons of atoms in the material are free to roam around.
True
False
A material that is a good insulator of electricity is normally a poor conductor of electricity.
True
False
Semiconductors can be made to conduct electricity and they can also be made to act like good insulators.
True
False
When an object is charged by contact, electrons flow from the ground onto the object, or from the object onto the ground.
True
False
When we allow charges to move onto or off a conductor by touching it with something connected to Earth, it is common to say that we are grounding it.
True
False
A bolt of lightning is a result of charging by induction.
True
False
An atom that is electrically polarized vibrates in only one direction.
True
False
According to Einstein, light consists of massless bundles of electromagnetic energy called photons.
True
False
Energy emitted by vibrating electric charges is carried by electromagnetic waves.
True
False
Materials that allow light to pass through them in straight lines are called opaque materials.
True
False
A thin beam of light is called an X-ray.
True
False
A total shadow is called an umbra.
True
False
Polarization occurs when waves vibrate in a single direction.
True
False
Light sometimes acts as a wave and sometimes as a particle.
True
False
Glass transmits ultraviolet and visible light waves but not infrared waves.
True
False
The distance light travels in one year is called a light-year.
True
False
Electromagnetic heat waves are called ultraviolet waves.
True
False
Infrared waves are responsible for sunburn.
True
False
The diagram below shows a pulse moving to the right in a rope. A is a point on the rope. Which type of wave is illustrated in the diagram?
transverse
hyperbolic
longitudinal
torsional
You shake a Slinky® back and forth. No wave moves along the spring. At a few places, the spring does not move at all. Which type of wave have you created?
reflection
standing
pulse
frequency
In a wave, the number of cycles per second is called the:
amplitude
speed
wavelength
frequency
Which of the following is a common unit used to measure the frequency of a wave?
farad
hertz
meter
cycle
Which of the following is a common unit used to measure the wavelength of a wave?
farad
hertz
meter
second
Which of the following is a common unit used to measure wave speed?
cm/sec
farad
second
hertz
As a wave travels through a medium, the particles of the medium vibrate in the direction of travel of the wave. Which type of wave is moving through the medium?
torsional
transverse
longitudinal
hyperbolic
What is a line perpendicular to a surface called?
ray
focal point
normal
focus
Which is the name for the place where extended light rays meet for a curved mirror?
focus
bend
ray
focal source
In the diagram below, parallel light rays in air diverge as a result of interacting with an optical device. Which optical device would most likely cause this diverging of light?
rectangular glass block
convex glass lens
plane mirror
concave glass lens
Which type of images can be projected onto a screen?
only real images
only virtual images
neither real images nor virtual images
both real images and virtual images
The amount of light bending as it enters a transparent material from air is dependent on which characteristic of the material?
surface area of the material
index of refraction of the material
volume of the material
mass of the material
How is a shadow created?
by an object reflecting light
by an object polarizing light
by an object blocking a part of the light
by an object refracting light
Where is the Sun positioned when your shadow is the longest?
directly overhead
at a 45° angle above the horizon
at a 90° angle above the horizon
at the horizon
What color light is produced when red, green, and blue light are mixed?
brown
black
violet
white
In order to form an electric circuit, you need to have
wires or conductors to connect everything
a power source
a light bulb or some resistance
a complete path for the current
In order for current to flow in a circuit, you must have
a switch that is open
a complete path for the current
two light bulbs in parallel
two light bulbs in series
Electrical resistance is measured in
volts
amperes
joules
watts
none of the above
A closed circuit is a circuit in which charge
can flow
is prevented from flowing
The symbol used to represent resistance in a schematic diagram is
two straight lines
a single line that is broken and has a bend in it
one straight line
a zigzag line
none of the above
Electrical devices in our homes are connected in
parallel
series
Fuses and circuit breakers are used to
protect us
prevent overloading
keep wires from getting overheated
break the circuit when too much current is being used
all of the above
A short circuit occurs when
the positive wire is connected directly to the negative wire
very short wires are used in the circuit
current lasts in the circuit for only a short time
all of the above
none of the above
In solid conductors, electric current is the flow of
positive and negative charges
electrons
negative ions
protons
none of the above
An ampere is a
unit of resistance
unit of current
type of charge
voltage
current
Electrical resistance is measured in
volts
joules
watts
amperes
none of the above
A pulsating electric field can travel through a wire at a speed of
less than 1 cm/s
about 100 cm/s
the speed of sound waves in metal
nearly the speed of light
A wire carrying a current is normally charged
not at all
positively
negatively
Alternating current is made by
alternating current and voltage
alternating the direction of voltage of the power source
huge chemical batteries
none of the above
The frequency of AC current in North America is
120 V
50 hertz
30 V
60 hertz
Current from a battery is always
DC
AC
The net speed of electrons in a wire is about
0.01 cm/s
10 m/s
100 kilometers per hour
a few million kilometers per hour
the speed of light
The resistance of your dry skin is usually around
0.001 ohm
1 ohm
100 ohms
100,000 ohms
millions of ohms
Electric power is defined as
current times voltage.
current divided by voltage.
current times resistance.
resistance times voltage.
voltage divided by current.
Power outlets in our homes typically have a potential difference of
30 V
120 V
60 A
240 V
120 V
An electric field has
direction
magnitude
Every proton in the universe is surrounded by its own
gravitational field
electric field
both A and B
none of the above
The direction of electric field lines shows the
direction of the force on a test positive charge
size of the field
strength of the field
Electrical potential energy is the energy a charged object has because of its
momentum
location
mass
motion
volume
Electric potential is defined as
electrical potential energy of a charge multiplied by the quantity of the charge
electrical potential energy of a charge divided by the quantity of the charge
electrical potential energy
gravitational potential
voltage
Which of the following is NOT a property of waves?
Wavelength
Mass
Frequency
Amplitude
